New M52 to M42 Focusing Helicoid Ring 17-31mm 25-55mm 36 - 90mm Macro Extension Tube w/ Copper Core

Product Feature:

This tube useful for lens without focusing ring. And it can be use as macro extension tube. There is no electronic element in the adapter, aperture and focusing must be manually control.

Made of Anodized Aluminum in Black finish and Copper core with high quality.

The length of this Helicond tube is 17mm(min) to 31mm(max) or 25mm(min) to 55mm(max) or 36mm(min) to 90mm(max),it offers a total of 14mm or 30mm or 54mm movement distance for the lens focusing.

This Helicoid tube is useful for those lenses without focus ring,Tube offers fine focus control for macro photography.

This focusing helicoid tube is made with 52mm(Female thread M52X1) front mountand  standard 42mm(Male thread M42X1) rear mount and is made with light-weight alloy.

You can use enlarger lenses with 52mm rear mount on some digital cameras with the adapter(by connecting with m42 adatpers etc)

It could be used as Macro Barrel.

Package including:

Focusing helicoids 17-31mm,25-55mm,36mm-90mm three size for your choice

adapter was made by Full metal, durable

High quality and bid it confident.